21498260

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{21937}}^1$

素因数の和:21960

約数の個数: 36

約数和(自身を含む): 52519572

約数和(自身を除く): 31021312

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 21937, 43874, 87748, 109685, 153559, 219370, 307118, 438740, 614236, 767795, 1074913, 1535590, 2149826, 3071180, 4299652, 5374565, 10749130, 21498260]

約数ペア:

[(1, 21498260), (2, 10749130), (4, 5374565), (5, 4299652), (7, 3071180), (10, 2149826), (14, 1535590), (20, 1074913), (28, 767795), (35, 614236), (49, 438740), (70, 307118), (98, 219370), (140, 153559), (196, 109685), (245, 87748), (490, 43874), (980, 21937)]